Attachment for multiple shuttle looms for preventing fouling of the filling threads



Oct. 9, 1951' c. CANNON ATTACHMENT FOR TI SHUTTLE LOOMS FOR FOULING o HEFILLING THREADS 3 Sheets-Sheet l PREVENTING Filed Oct. 22, 1949 IZSnvcntor CLARENCE A. CANNON (Ittomeg Oct. 9, 1951' c, A, NO 2,570,764

ATTACHMENT FOR MULTIPLE SHUTTLE LOOMS FOR PREVENTING FOULING OF THEFILLING THREADS Filed Oct. 22, 1949 3 Sheets-Sheet 2 Zhwcntor CLARENCEA. CANN ON 32 Cmorneg 1951 c. A. CANNON 2,570,764

ATTACHMENT FOR MULTIPLE SHUTTLE L0 OMS FOR PREVENTING FOULING OF THEFILLING THREADS Filed Oct. 22, 1949 3 Sheets-Sheet 3 c 0 O 4 3 4 2 I 2 4M 7 I I all 3 2 8 8 2 I 2 R 5 7 2 7 2 2 G a Q l m 4 A U o \\3 m H- 25 32Snventor CLARENCE A. CANNON V (Ittomeg Patented Oct. 9, 1951 UNITEDSTATES PATENT OFFICE 2,570,764 ATTACHMENT FOR MIJIQTI PLE SHUTTLE LOOMSFOR PREVENTING FOULING OF THE FILLING THREADS Clarence A. Cannon,Johnston, S. 0.

Application October '22, 1949, serial No. 123,036

This invention relates toattachments for multiple shuttle looms forpreventing fouling of the filling threads, that is to say, todevices-adapted to be applied to existing looms, or to be incorporatedin new looms at the time of their manui aeture, for preventing theentanglement of the filling threads from the shuttles which are out ofuse, either by the active shuttle or by any of the other fillingthreads. 7

In the weaving of fabrics in multiple shuttle looms it frequentlyhappens that the threads coming from the shuttles which are not in usebecome entangled with other threads, or with the'active shuttle,- withthe result that undesired filling threads are drawn into the edgeportions of the fabric, causing defects therein which resuit inconsiderable loss to the manufacturer.

Heretofor'e, numerous attempts have beenirn'ade to produce asatisfactoryattaohment for multiple shuttle looms which will prevent thepulling of undesired filling threads into the edge portions of thefabric, but most of these have been "too complicated and expensive, andsubject to ire quent breakdowns, and in themselves ofttimes causingtrouble more serious than that sought to be eliminated.

The principal object of the present invention is to provide a simple,yet efficient, device for preventing fouling of the filling threads inmultiple shuttle looms, thereby eliminating the dragging of such threadsinto the edge portions of the fabric, with resulting defects in thecloth.

A further object of the present invention is to provide a device of thecharacter aforesaid, which may be readily applied to the common forms ofmultiple shuttle looms at present in use, and which may also beincorporated in new looms at the time of their manufacture.

A further object of the present invention to provide a device of thecharacter aforesaid, which will be relatively inexpensive yet will bepositive and certain in its action.

The nature and characteristic features of the invention will be morereadily understood from the following description, taken in connectionwith the accompanying drawings forming part hereof, in which:

Figure 1 is a transverse sectional view of the lay of a multiple shuttleloom of a common type, also illustrating a portion of the shuttle boxstructure associated therewith, and showing an attachment embodying themain features of the present invention applied thereto;

' Fig. 2 is a fragmentary plan view illustrating certain portions of thelay and shuttle'boxstrue- Claims. (Cl. 139*116) ture, as shown in Fig.l, with the attachment of the present invention shown applied thereto;

Fig. 3 is a rear "elevation, on a reduced scale,

of the device of the present invention, detached; Figs. 4, 5, 6 and '7are front elevations of the device of the present invention but with acover plate of a bracket member broken away, and the parts shown in thevarious positions resulting from the actuation of the shuttle boxmotionto selectively the various shuttle boxes to desired positions,"the same also being shown on a reduced scale," and Fig. 8 is afragmentary sectional detail view, the section 'being taken on the line8-8 of Fig, 5,, the same being shown on the same scale as Figs. 1 and 2.i

It should, of course, be understood that the description and drawingsherein are illustrative merely and that various changes and modifications may be made in the structure disclosed without departing ,from thespirit of the inven-- tion, and particularly that the relativedimensions of the parts would be modified for the purpose ofadaptation-of the invention to various makes of horns.

Referring to the drawings, as there shown,- 10 is the lay of the loom,and H is the usual reed for beating up the filling into the fell of thecloth. The lay has cut therein a transverse groove or recess l 2 inwhich certain filling engaging fingers, hereinafter referred to, are attimes located so that there will be no interference with the shuttle as'thes'am'e passes over the top surface of the lay. The shuttlebottstructure I 3 is raised and lowered ltl'l usual manner by means ofany preferred mechanism (not shown) for thepu'rpose of selec= ti-velybringing the several shuttles into action by shifting the shuttle boxstructure to bring the desired shuttle to operative position.

A bracket member 20, having arm's 2| and 22, by iiieans of which saidbracket member seciiiedtothe mouth portion l5 of the shuttle boxstructure; screws 23 may be employed for fats-'- tening the arms-2| and2 2fto the'portion l 5 of the shuttle boli stl uettire, or any'otherfastening devices may be employed for that purpose. The bi aelit member20 comprises an elongated plate having its top portion bent outwardly asat 24, and its b ttom portion bent outwardly as at '25.

'Tl-i oiltvvai dly bent portions 24 and '25, at the top andbottom,respectivelymf the bracket mem 1581 20, serve to support apiuiaury of vertical-1y disposed rods 30, there-beingprov ided a numberDi Slit-Eh rods 317 which, each instance, Will be one less than thenumber of shuttle boxes employed in the loom.

Each of the rods 30 has an enlarged head portion 3| at its top end, andeach of said rods is also provided with a transverse hole at the bottomfor the mounting therein of a cotter pin 32, the arrangement being suchthat upon the withdrawal of the cotter pin 32 any one or all of the rods30 may be withdrawn for replacement or repair of the same or of theparts carried thereby.

A cover plate '26 is mounted on the front of the bracket member whichserves to protect the rods and the parts mounted thereon. The coverplate 26 is secured to the bracket member by screws 21 passing throughcars 28 extending from one edge of the cover plate structure.

For each of the vertical rods 3|] there is provided a finger member forengaging the filling yarn at certain times. The inner end portion ofeach finger portion 40 is located in the groove 12 of the lay when theshuttle box structure is in its lowermost position, that is, when theshuttle from the uppermost box is in action.

Each of the finger members 40 is carried by a supporting member 4| whichis slidably mounted on one of the rods 30. The finger supporting member4| has a portion 42 in a slot 43 in the bracket member 20.

The intermediate portion of each finger member 46, between itssupporting member 4| and the forward portion thereof is preferablyprovided on its top edge with a toothed arrangement, as at 44, for thepurpose of engaging any filling threads which may become looped and rideforward on said finger member 40 when the same is in a position raisedabove the lay, as will be hereinafter more fully set forth.

Another bracket member is secured to the lay in any preferred manner as,for example, by the utilization of a set screw M which is commonly usednear the end of the lay ID for adjusting the lay beam with respect tothe casting forming part of the lay sword, there being provided, inaddition to the usual jam nut l6, an additional jam nut I! so that thebracket member 50 is fixedly secured with respect to the lay by beingclamped between the two jam nuts l6 and H on the set screw l4.

The bracket arm 50 extends upwardly and outwardly and then verticallyupward as at 5|. The vertically extending portion 5| to which there isfixedly secured, at each of the two locations, two members 52, each pairof said members, at each location, preferably forming a fork whichextends across in front of the bracket member 20, strad dling thevertical rods 30. Between the upper and lower pairs of fork members 52,the members 4| Which support the yarn engaging fingers are at all timeslocated, and these members 52 serve to hold the finger supportingmembers 4| in their limit positions.

Upon the vertical rods 30 there are mounted a plurality of coil springs34 which, areso tensioned as, in the absence of the members 52, to causethe finger members 40 to be equally spaced in vertical direction. Byreason of said springs 34 being of different lengths, and preferably ofthe same normal pitch, and gauge, and therefore of different tensions,the tendency of the springs will be to cause the members 4| and thefingers 40 carried thereby to be brought under the control of themembers 52 as shown in Figs. 4, 5, 6 and 7 of the drawings, so that inany given elevation of the shuttle box structure the springs 34 willcause the members 4| which support the fillingengag:

4 ing fingers 4|] to bear against the proper members 52, and the samewill be raised and lowered with respect to the lay in the propersequence, as will be hereinafter more fully set forth.

The operation of the device should now be readily understood. When theloom is in the condition as shown in Fig. 1 of the drawings, that is tosay, with the uppermost shuttle box in alinement with the top surface ofthe lay, the several parts of the device of the present invention willbe in the positions shown in Fig. 4 of the drawings.

All three of the finger members 40 will then be located in the groove orrecess |2 in the top of the lay, being held in such positions by themembers 52, and being impelled to such positions by the springs 34disposed on the rods 30 above the finger supporting members 4|. Byreason of there then being but one shuttle box above the plane of thetop surface of the lay, there will be little likelihood of fouling ofthe idle filling threads when the loom is in this condition.

When, however, the shuttle box structure is raised to bring the secondbox from the top in alinement with the top surface of the lay, then oneof the finger supporting members 4| and the finger 40 carried therebywill be raised to the position shown in Fig. 5 of the drawings, and saidfinger 40 will serve to support the idle thread coming from the shuttlein the top box, and the same will be kept free of any entanglement withthe active shuttle or with the filling thread controlled thereby. v

7 When the shuttle box structure is raised still further, to bring thethird box in alinement with the top surface of the lay, the parts willbe in the respective positions shown in Fig. 6 of the drawings, andanother of the finger supporting members 4| will be elevated and thefinger 40 carried thereby will serve to support the thread coming fromthe second box and will keep the same free of any entanglement with thethen active shuttle operating out of the third box or with the fillingcontrolled thereby.

When the shuttle box structure is raised to bring the lowermost box inalinement with the top surface of the lay, the parts will, then be inthe respective positions shown in Fig. 7 of the drawings, and all threeof the finger supporting members will be raised and held against theuppermost of the members 52, and the filling thread coming from theshuttle in the third box will then be held above the path of travel ofthe shuttle operating from the lowermost box, and will thereby preventany entanglement therewith as well as with the filling threadcontrolledthereby.

It will be noted that in each instance: the finger supporting members 4|which are slidably mounted on the rods 30 are held against the propermember 52 by reason of the tension of the respective springs which aremounted on the rods 30 above and below .thefinger supporting members.

It will also be noted that in each instance, after the lay has movedforward to beat up the filling thread into the fell of the cloth, and asthe same is retracted, the idle threads will be carried forwardly ontothe notched portions 44 of their respective finger members 40, andthereby any whipping of the loops which are thus formed in thoseportions of the filling threads will be effectively eliminated.

I claim: a

1. An attachment for a multiple shuttle loom having the usual lay and ashuttleboxstrucw ture provided with a plurality of shuttle boxes adaptedto be shifted to bring the shuttles selectively into action, a pluralityof finger supporting members slidably mounted with respect to theshuttle box structure, a-filling thread engaging finger carried by eachof said finger supporting members, a pair .of springs for each of saidfinger supporting members oppositely disposed toward said fingersupporting members and adapted to impel the same to their respectiveoperative positions, and means adapted to locate the finger supportingmembers in their limit positions against the tension of the springs.

2. An attachment for a multiple shuttle 100m having the usual lay and ashuttle box structure provided with a plurality of shuttle boxes adaptedto be shifted to bring the shuttles selectively into action, a pluralityof rods sup ported by the shuttle box structure, a finger supportingmember slidably mounted on each of said rods, a filling thread engagingfinger carried by each of said finger supporting members, springsmounted on said rods and oppositely disposed toward the fingersupporting members and adapted to impel the same to their respectiveoperative positions, and means adapted to be engaged by the fingersupporting members and to locate the same in their limit positionsagainst the tension of the springs.

3. An attachment for a multiple shuttle loom having the usual lay and ashuttle box structure provided with a plurality of shuttle boxes adaptedto be shifted to bring the shuttles selectively into action, a bracketsecured to the shuttle box structure and adapted to be shifted in unisontherewith, a plurality of vertical rods carried by said bracket, afinger supporting memher slidably mounted on each of said rods, afilling thread engaging finger carried by each of said finger supportingmembers, springs mounted on said rods and oppositely disposed toward thefinger supporting members and adapted to impel the same to theirrespective operative positions, and means adapted to locate the fingersupporting members in their limit positions against the tension of thesprings.

4. An attachment for a multiple shuttle loom having the usual lay and ashuttle box structure provided with a plurality of shuttle boxes adaptedto be shifted to bring the shuttles selectively into action, a bracketsecured to the shuttle box structure and adapted to be shifted in unisontherewith,,a plurality of rods carried by said bracket, a fingersupporting member slidably mounted on each of said rods, a fillingthread engaging finger carried by each of said finger supportingmembers, springs mounted on said rods and oppositely disposed toward thefinger supporting members and adapted to impel the same to theirrespective operative positions, and means adapted to be engaged by thefinger supporting members and to locate the same in their limitpositions against the tension of the springs.

5. An attachment for a multiple shuttle loom having the usual lay and ashuttle box structure provided with a plurality of shuttle boxes adaptedto be shifted to bring the shuttles selectively into action, a bracketsecured to the shuttle box structure and adapted to be shifted in unisontherewith, a plurality of rods carried by said bracket, a fingersupporting member slidably mounted on each of said rods, a fillingthread engaging finger carried by each of said finger supportingmembers, springs mounted on said rods andoppositely .disposedtoward thefinger supporting members and adapted to impel the same to theirrespective operative positions, and spaced members supported from thelay and adapted to be engaged by the finger supporting members to locatethe same in their limit positions against the tension of the .springs.

6. An attachment for a multiple shuttle loom having the usual lay and ashuttle box structure provided with a plurality of shuttle. boxesadapted to be shifted to bring the shuttles selectively into action, abracket secured to the shuttle box structure and adapted to be shiftedin unison therewith, a plurality of rods carried by said bracket, afinger supporting member slidably mounted on each of said rods, afilling thread engaging finger carried by each of said finger supportingmembers, springs mounted on said rods and oppositely disposed toward thefinger supporting members and adapted to impel the same to theirrespective operative positions, a bracket member fixedly secured to thelay, spaced members carried by said bracket adapted to be engaged by thefinger supporting members and to locate the same in their limitpositions against the tension of the springs.

7. An attachment for a multiple shuttle loom having the usual lay and ashuttle box structure provided with a plurality of shuttle boxes adaptedto be raised and lowered to bring the shuttles selectively into action,a bracket secured to the shuttle box structure and adapted to be raisedand lowered in unison therewith, a plurality of vertical rods carried bysaid bracket, a finger supporting member slidably mounted on each ofsaid rods, a filling thread engaging finger carried by each of saidfinger supporting members, springs mounted on said vertical rods aboveand below the finger supporting members and adapted to impel the same totheir respective operative positions, and means adapted to locate thefinger supporting members in their limit operations against the tensionof the springs.

8. An attachment for a multiple shuttle loom having the usual lay and ashuttle box structure provided with a plurality of shuttle boxes adaptedto be raised and lowered to bring the shuttles selectively into action,a bracket secured to the shuttle box structure and adapted to be raisedand lowered in unison therewith, a plurality of vertical rods carried bysaid bracket, a finger supporting member slidably mounted on each ofsaid rods, a filling thread engaging finger carried by each of saidfinger supporting members,

springs mounted on said vertical rods above and below the fingersupporting members and adapted to impel the same to their respectiveoperative positions, and means carried by the lay adapted to be engagedby the finger supporting members to locate the same in their limitpositions against the tension of the springs.

9. An attachment for a multiple shuttle loom having the usual lay and ashuttle box structure provided with a plurality of shuttle boxes adaptedto be raised and lowered to bring the shuttles selectively into action,a bracket secured to the shuttle box structure and adapted to be raisedand lowered in unison therewith, a plurality of vertical rods carried bysaid bracket, a finger supporting member slidably mounted on each,- ofsaid rods, a filling thread engaging finger carried by each of saidfinger supporting members, springs mounted on said vertical rods aboveand below the finger supporting members and adapted to impel the same totheir respective operative positions, and spaced members supported fromthe lay and adapted to be engaged by the finger supporting members to10- cate the same in their limit positions against the tension of thesprings.

V} 10. An attachment for a multiple shuttle loom having the usual layand a shuttle box structure provided with a plurality of shuttle boxesadapted to be raised and lowered to bring the shuttles selectively 7into action, a bracket secured to the shuttle box structure and adaptedto be raised and lowered in unison therewith, a plurality of verticalrods carried by said bracket, afinger supporting member slidably mountedon each of said rods, a filling thread engaging finger carried by eachof said finger supporting members, springs mounted on said vertical rodsabove and below the finger supporting members and 8 adapted to impel thesame to their respective operative positions, a bracket member fixedlysecured to the lay, spaced members carried by said bracket adapted to beengaged by the finger supporting members and to locate the same in theirlimit positions against the tension of the springs.

CLARENCE A. CANNON.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 397,074 Fitton Jan. 29, 1889FOREIGN PATENTS Number Country Date 185,138 Germany May 16, 1907

